fatberg

noun

fat·​berg ˈfat-ˌbərg 

plural fatbergs

: a large mass of fat and solid waste that collects in a sewer system

The toxic lump of congealed fat and household waste—known as a fatberg—was 40 metres long and so heavy that it broke the 1940s-era sewer.

—Rebecca Ratcliffe

Restaurants are a big contributor to fatbergs: Thames Water, the London utilities company, found nine out of 10 fast-food eateries lacked adequate grease traps to stop fat from entering the sewers.

—Eve Watling

Examples of fatberg in a Sentence

Recent Examples on the Web

The sewer has a fatberg. —Will Pritchard, Wired, 13 Nov. 2021

Word History

Etymology

fat entry 3 + (ice)berg

First Known Use

2008, in the meaning defined above